Superoxide Dismutase: A Stable Biochemical Marker for Abiotic Stress Tolerance in Higher Plants

By M. Berwal, C. Ram. Abiotic and Biotic Stress in Plants, 2018

92 citations recorded by the source corpus.

Superoxide dismutases (SODs) are ubiquitous metalloenzymes that constitute the first line of defense against reactive oxygen species (ROS). It constitutes one of the major enzymatic components of detoxification of superoxide radicals generated in biological system by catalyzing its dismutation to H 2 O 2 and finally to H 2 O and O 2 by catalase and peroxidase. Most plant species contain numerous SOD isoforms differing in their active site metal ions, namely Cu/Zn-SOD, Mn-SOD, and Fe-SOD. Many studies also reported that the tolerance level of plants is posi-tively correlated with SOD activity as well as with the number of SOD isoforms, and established the fact that “More the SOD Activity, More the Stress Tolerance.” Therefore, the SOD isozyme profile of any plant can be used as stable marker for stress tolerance in plant. In this chapter, we have discussed the role of SOD in abiotic stress tolerance, type of SODs, and correlation of its activity and its isoforms with stress tolerance level.

Subfields: Health, Toxicology and Mutagenesis, Nutrition and Dietetics, Plant Science

View Paper: https://www.semanticscholar.org/paper/98284c0e8b603c040ba7b061be611621b8921b4f

How researchers see this paper

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In Health, Toxicology and Mutagenesis

1. M. Fujita
2. M. Hasanuzzaman

In Nutrition and Dietetics

1. M. Fujita
2. M. Hasanuzzaman

In Plant Science

1. M. Hasanuzzaman
2. M. Fujita
3. J. Mahmud
4. M. Bhuyan
5. A. Raza
6. Faisal Zulfiqar
7. Kamrun Nahar
8. Mahabub Alam

Citations in the corpus

• ROS status and antioxidant enzyme activities in response to combined temperature and drought stresses in barley (2021, background): “Over‑expressing plants of vari‑ ous SOD isoforms increases enhanced tolerance to oxida‑ tive stress and to other environmental stresses (Berwal and Ram 2018).”
• Reactive Oxygen Species and Antioxidant Defense in Plants under Abiotic Stress: Revisiting the Crucial Role of a Universal Defense Regulator (2020, background): “Similarly, H2O2 can be produced through the dismutation of O2•−/HO2•− by SOD isoforms, NADPH oxidases, and heme-containing class III peroxidases (POX) activity [27,28].”